Answer
$82$
Work Step by Step
$\displaystyle \sum_{k=3}^{6}(5k-2)=(5\cdot 3-2)+(5\cdot 4-2)+(5\cdot 5-2)+(5\cdot 6-2)$
$=(15-2)+(20-2)+(25-2)+(30-2)$
$=13+18+23+28$
$=82$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 12 Sequences and Series - 12.1 Define and Use Sequences and Series - 12.1 Exercises - Skill Practice - Page 799: 49
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